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- PDB-9aya: Crystal structure of CRAF/MEK complex with NST-628 and active RAF... -
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Basic information
Entry | Database: PDB / ID: 9aya | ||||||
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Title | Crystal structure of CRAF/MEK complex with NST-628 and active RAF dimer | ||||||
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![]() | TRANSFERASE / Inhibitor / complex / SIGNALING PROTEIN | ||||||
Function / homology | ![]() death-inducing signaling complex assembly / epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / intermediate filament cytoskeleton organization / JUN kinase kinase activity / regulation of axon regeneration / placenta blood vessel development / mitogen-activated protein kinase kinase / MAP-kinase scaffold activity / labyrinthine layer development ...death-inducing signaling complex assembly / epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / intermediate filament cytoskeleton organization / JUN kinase kinase activity / regulation of axon regeneration / placenta blood vessel development / mitogen-activated protein kinase kinase / MAP-kinase scaffold activity / labyrinthine layer development / cerebellar cortex formation / type B pancreatic cell proliferation / regulation of Rho protein signal transduction / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / Rap1 signalling / Signaling by MAP2K mutants / regulation of cell motility / positive regulation of axonogenesis / insulin secretion involved in cellular response to glucose stimulus / regulation of Golgi inheritance / Negative feedback regulation of MAPK pathway / trachea formation / regulation of early endosome to late endosome transport / GP1b-IX-V activation signalling / regulation of stress-activated MAPK cascade / Frs2-mediated activation / IFNG signaling activates MAPKs / MAPK3 (ERK1) activation / ERBB2-ERBB3 signaling pathway / endodermal cell differentiation / face development / MAP kinase kinase activity / pseudopodium / neurotrophin TRK receptor signaling pathway / regulation of cell differentiation / somatic stem cell population maintenance / Bergmann glial cell differentiation / Uptake and function of anthrax toxins / thyroid gland development / protein kinase activator activity / MAP kinase kinase kinase activity / extrinsic apoptotic signaling pathway via death domain receptors / type II interferon-mediated signaling pathway / negative regulation of protein-containing complex assembly / Schwann cell development / negative regulation of extrinsic apoptotic signaling pathway via death domain receptors / activation of adenylate cyclase activity / keratinocyte differentiation / : / response to muscle stretch / myelination / ERK1 and ERK2 cascade / CD209 (DC-SIGN) signaling / protein serine/threonine/tyrosine kinase activity / insulin-like growth factor receptor signaling pathway / protein serine/threonine kinase activator activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / thymus development / Signal transduction by L1 / positive regulation of protein serine/threonine kinase activity / cell motility / RAF activation / wound healing / Signaling by high-kinase activity BRAF mutants / MAP2K and MAPK activation / positive regulation of peptidyl-serine phosphorylation / neuron differentiation / Stimuli-sensing channels / Negative regulation of MAPK pathway / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / chemotaxis / cellular senescence / MAPK cascade / Signaling by BRAF and RAF1 fusions / late endosome / insulin receptor signaling pathway / heart development / scaffold protein binding / regulation of apoptotic process / histone H3Y41 kinase activity / histone H2AXY142 kinase activity / mitochondrial outer membrane / eukaryotic translation initiation factor 2alpha kinase activity / positive regulation of MAPK cascade / positive regulation of ERK1 and ERK2 cascade / 3-phosphoinositide-dependent protein kinase activity / DNA-dependent protein kinase activity / ribosomal protein S6 kinase activity / histone H3S10 kinase activity / histone H2AXS139 kinase activity / histone H3S28 kinase activity / histone H4S1 kinase activity / histone H2BS14 kinase activity / histone H3T3 kinase activity / histone H2AS121 kinase activity / Rho-dependent protein serine/threonine kinase activity Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Quade, B. / Huang, X. | ||||||
Funding support | 1items
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![]() | ![]() Title: The Pan-RAF-MEK Nondegrading Molecular Glue NST-628 Is a Potent and Brain-Penetrant Inhibitor of the RAS-MAPK Pathway with Activity across Diverse RAS- and RAF-Driven Cancers. Authors: Meagan B Ryan / Bradley Quade / Natasha Schenk / Zhong Fang / Marshall Zingg / Steven E Cohen / Brooke M Swalm / Chun Li / Ayşegül Özen / Chaoyang Ye / Maria Stella Ritorto / Xin Huang / ...Authors: Meagan B Ryan / Bradley Quade / Natasha Schenk / Zhong Fang / Marshall Zingg / Steven E Cohen / Brooke M Swalm / Chun Li / Ayşegül Özen / Chaoyang Ye / Maria Stella Ritorto / Xin Huang / Arvin C Dar / Yongxin Han / Klaus P Hoeflich / Michael Hale / Margit Hagel / ![]() Abstract: Alterations in the RAS-MAPK signaling cascade are common across multiple solid tumor types and are a driver for many cancers. NST-628 is a potent pan-RAF-MEK molecular glue that prevents the ...Alterations in the RAS-MAPK signaling cascade are common across multiple solid tumor types and are a driver for many cancers. NST-628 is a potent pan-RAF-MEK molecular glue that prevents the phosphorylation and activation of MEK by RAF, overcoming the limitations of traditional RAS-MAPK inhibitors and leading to deep durable inhibition of the pathway. Cellular, biochemical, and structural analyses of RAF-MEK complexes show that NST-628 engages all isoforms of RAF and prevents the formation of BRAF-CRAF heterodimers, a differentiated mechanism from all current RAF inhibitors. With a potent and durable inhibition of the RAF-MEK signaling complex as well as high intrinsic permeability into the brain, NST-628 demonstrates broad efficacy in cellular and patient-derived tumor models harboring diverse MAPK pathway alterations, including orthotopic intracranial models. Given its functional and pharmacokinetic mechanisms that are differentiated from previous therapies, NST-628 is positioned to make an impact clinically in areas of unmet patient need. Significance: This study introduces NST-628, a molecular glue having differentiated mechanism and drug-like properties. NST-628 treatment leads to broad efficacy with high tolerability and central nervous system activity across multiple RAS- and RAF-driven tumor models. NST-628 has the potential to provide transformative clinical benefits as both monotherapy and vertical combination anchor. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 547.7 KB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 39.6 KB | Display | |
Data in CIF | ![]() | 53.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9axaC ![]() 9axcC ![]() 9axhC ![]() 9axmC ![]() 9axxC ![]() 9axyC ![]() 9ay7C C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
-Protein , 2 types, 4 molecules ACBD
#1: Protein | Mass: 31975.775 Da / Num. of mol.: 2 / Mutation: Y340D Y341D Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: P04049, non-specific serine/threonine protein kinase #2: Protein | Mass: 34543.836 Da / Num. of mol.: 2 / Mutation: S218A S222A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q02750, mitogen-activated protein kinase kinase |
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-Non-polymers , 4 types, 55 molecules 




#3: Chemical | Mass: 488.464 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C22H18F2N4O5S / Feature type: SUBJECT OF INVESTIGATION #4: Chemical | #5: Chemical | #6: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.65 Å3/Da / Density % sol: 53.51 % |
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Crystal grow | Temperature: 291 K / Method: vapor diffusion, hanging drop / pH: 7 Details: 0.2M magnesium chloride, 0.1M tris pH 7.0, 10% w/v PEG 8000 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS EIGER2 S 9M / Detector: PIXEL / Date: May 5, 2023 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.97918 Å / Relative weight: 1 |
Reflection | Resolution: 2.59→161.57 Å / Num. obs: 43777 / % possible obs: 99.9 % / Redundancy: 4.5 % / Biso Wilson estimate: 49.21 Å2 / Rmerge(I) obs: 0.075 / Net I/σ(I): 13 |
Reflection shell | Resolution: 2.59→2.69 Å / Rmerge(I) obs: 0.544 / Num. unique obs: 2754 |
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Processing
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Refinement | Method to determine structure: ![]() Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 56.57 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 2.59→57.64 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Origin x: -29.1296860495 Å / Origin y: -5.8080576698 Å / Origin z: 38.7259386249 Å
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Refinement TLS group | Selection details: all |